Acclimation is the process by which an organism physiologically adapts to the environment in which it lives. Acclimation can be reversible or irreversible depending on the species and adaptation. If an adaptation is irreversible, then an individual grown in a particular environment may not be able to survive if transplanted to a different environment, even if other individuals of the same species are able to survive there. Successfully adapting to a new environmental condition can expand the boundaries of a species's fundamental niche and realized niche.